| Harpenden to Poing | 595.53 mi (958.41 km) |
| Harpenden to Porta Westfalica | 395.53 mi (636.55 km) |
| Harpenden to Possneck | 521.93 mi (839.97 km) |
| Harpenden to Potsdam | 570.03 mi (917.38 km) |
| Harpenden to Preetz | 471.91 mi (759.46 km) |
| Harpenden to Prenzlau | 605.02 mi (973.69 km) |
| Harpenden to Preussisch Oldendorf | 377.28 mi (607.17 km) |
| Harpenden to Prien am Chiemsee | 627.47 mi (1,009.81 km) |
| Harpenden to Pritzwalk | 534.71 mi (860.54 km) |
| Harpenden to Puchheim | 577.48 mi (929.36 km) |
| Harpenden to Pulheim | 313.25 mi (504.13 km) |
| Harpenden to Pullach im Isartal | 587.61 mi (945.67 km) |
| Harpenden to Puttlingen | 362.49 mi (583.37 km) |
| Harpenden to Quakenbruck | 356.30 mi (573.42 km) |
| Harpenden to Quedlinburg | 490.80 mi (789.86 km) |
